Statistics - Unit 1 (Data Analysis) Test & Review 100% verified 2023/2024

The stemplot below displays the grades (out of 30) that 26 students received on a quiz. Which of the following boxplots correctly displays the distribution of quiz grades? - Correct Answers (The first option. There should be four outlier dots.) High school students were asked if they preferred fiction or nonfiction books. The results are displayed below. Which of the following statements is true, according to the graph? - Correct Answers The percentage of preference for each type of book is relatively equal among the different grades of students. The parallel boxplots below display the weights of bags of two different brands, A and B, of granola. Which statement is a correct comparison of the distribution of granola bag weights for brands A and B? - Correct Answers The bag weights for brand A have less variability than the bag weights for brand B. As an introduction to probability, a student is asked to roll a fair, six-sided number cube seven times. The results of those seven rolls are shown below. 1, 4, 4, 4, 4, 6, 5 What is the IQR of the data? - Correct Answers 1 The side-by-side stemplot below displays the arm spans, in centimeters, for two classes. Which statement correctly compares the arm spans for Class A to those of Class B? - Correct Answers The mean arm span for Class B is about the same as Class A's. The five-number summary of a data set is given below. Minimum: 3 Q1: 12 Median: 15 Q3: 16 Maximum: 20 Which of the following is a true statement about outliers for this distribution? - Correct Answers The distribution's minimum is an outlier. A waitress wondered if there was an association between the type of food and the type of drink customers ordered. The results are displayed below. Based on the graph, is there an association between food ordered and drink ordered? - Correct Answers There is an association because the distribution of drinks ordered differs among the food groups. Customers at a sandwich shop have a number of options for a side dish to go with their sandwiches. The manager of the shop tallies the customers' side dish preferences during a lunch hour. The results are shown in the pie chart below. Which of the following is a true statement regarding the information shown in the pie chart? - Correct Answers Side dish choice is a categorical variable. A random sample of teenagers were surveyed about their favorite sport. The bar graph below displays their responses. Which of the following statements is correct? - Correct Answers Twice as many teenagers in the sample chose soccer over basketball as their favorite sport. The stemplot below displays the times, in seconds, for 25 students to run 100 meters. Which of the following is the correct five-number summary? - Correct Answers 22, 24.5, 26, 28, 30 A website lists homes for sale in a suburban town. The site provides information including neighborhood, selling price, number of bedrooms, and whether the home has a garage. What are the individuals in this setting? - Correct Answers homes A school administrator asks each student if they participate in a sport and if they participate in a club. The results are shown below. What percentage of students do not participate in a sport? - Correct Answers 51.0% The resting heart rates for a sample of 15 students are recorded in the following stemplot. What is the mean resting heart rate for this sample? - Correct Answers 69.9 beats per minute High school students were asked if they preferred fiction or nonfiction books. The results are displayed below.